Method and apparatus for automatically dividing machining process in automatic programming apparatus

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(11)

EP 1 677 169 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	30.09.2009 Bulletin 2009/40

(43)	Date of publication A2:
	05.07.2006 Bulletin 2006/27

(21)	Application number: 05028595.6

(22)	Date of filing: 28.12.2005

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International Patent Classification (IPC):

G05B 19/4093^(2006.01)

G05B 19/042^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

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Priority:

28.12.2004 JP 2004379721

(71)	Applicant: Yamazaki Mazak Corporation
	Niwa gun, Aichi pref. (JP)

(72)	Inventors:
	Ohashi, Hajime c/o Yamazaki Mazak Corporation Niwa gun Aichi pref. (JP) Kikata, Kazuhiro c/o Yamazaki Mazak Corporation Niwa gun Aichi pref. (JP) Kimura, Morikuni c/o Yamazaki Mazak Corporation Niwa gun Aichi pref. (JP) Itoh, Tetsuya c/o Yamazaki Mazak Corporation Niwa gun Aichi pref. (JP)

(74)	Representative: Geyer, Fehners & Partner
	Patentanwälte Perhamerstraße 31 80687 München 80687 München (DE)

(54)	Method and apparatus for automatically dividing machining process in automatic programming apparatus

(57) An automatic programming apparatus includes a process division control section, which automatically divides a machining process executed to obtain a predetermined product shape from a material shape of a workpiece. The process division control section computes a removal shape, which is a shape to be removed from the material shape when executing the machining process, based on the material shape and the product shape. The process division control section defines a reference machining boundary that intersects a reference axis defined on the product shape and divides the volume of the removal shape into two equal parts. The process division control section defines, on the removal shape, a process division boundary that intersects the reference axis based on the reference machining boundary and the profile of the product shape. The machining process is divided into a first process and a second process with the process division boundary.

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